Novel Gm-C Realizations of nth-Order Filters

Cheng-Chung HSU  Wu-Shiung FENG  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E84-A   No.1   pp.339-346
Publication Date: 2001/01/01
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: PAPER
Category: Analog Signal Processing
Gm-C filters,  multiple loop feedback,  active-RC filter,  OTA,  

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This work describes a novel structural design for nth-order (n2) transconductance and grounded capacitor (Gm-C) filters with multiple loop feedback technology. The proposed design largely focuses on elucidating the relationship between the Gm-C filter structure and the feedback matrix, allowing us to systematically generate and formulate general design equations. The proposed design allows many new interesting filter configurations to be produced alongside some known structures. Furthermore, numerical design examples and simulation results verify the feasibility of the Gm-C filter approach.